US2300796A

US2300796A - Vehicle wheel truck

Info

Publication number: US2300796A
Application number: US412907A
Authority: US
Inventors: Howard L Mcgregor
Original assignee: Individual
Current assignee: Individual
Priority date: 1941-09-29
Filing date: 1941-09-29
Publication date: 1942-11-03
Anticipated expiration: 1959-11-03

Description

L. MCGREGOR 2,300,796

VEHICLE WHEEL TRUCK Filed Sept. 29, 1941 ATTORNEYS Patented Nov. 3, 1942 UNITED STATES PATENT,

VEHICLE WHEEL TRUCK Howard L. McGregor, Hamilton, Y. Application September 29, 1941, Serial No. 412,907

' wheel truck comprising the subject matter of 2 Claims. This invention relates to a vehicle wheel truck and has for an. object to provide a truck which may be run under a truck wheel when the wheel is jacked up, whereupon the Jacks of the truck may be elevated to lift the platform in position to support the wheel to be withdrawn from the axle by pulling the truck away from the vehicle, the center of the wheel being always maintained in alignment-with the axle spindle by the plat-' form to effect easy replacement of the wheel after the wheel, or truck, has been repaired. A further object is to provide apparatus of this invention, includes a platform ll, having flat portions I! at the sides and having a concave central portion i3 adapted to receive the truck wheel l when the heel is judged up. The supporting frame for the platform comprises two U-shaped frame members It, a portion of one of the'frame members being shown in Figure 4, each frame member comprising. side bars i ands. transversely disposed bar It. The side bars are connected by pivot pins I! to hinge ears it which extend downwardly from the conthis character which will be formed of a few strong, simpleand durable parts, which will be inexpensive to manufacture, and which will not easily get out of order.

With the above and other objects in view, the invention consists of certain novel details of construction and combinations of parts hereinafter fully described and claimed, it being understood that various modifications may be re-' sorted to within the scope of the appended claims without departing from the spirit or sacrificing any of the advantages of the invention.

In the accompanying drawing forming a part of this specification:

Figure 1 is a front elevation of a vehicle wheel truck constructed in accordance with the invention, the platform being in lowered position undemeath a vehicle wheel,

Figure 2 is a side elevation of the wheel truck shown in Figure l, with the platform raised to I support the vehicle wheel.

Figure 3 is a side elevation of the vehicle wheeltruck with the platform raised.

Figure 4 is a fragmentary perspective view of one of the V-shaped frames for pivotally supv porting the platform.

Figure 5 is a detail perspective view of the non-rotatable loose connection between the upper end of one ofthe jacks and the platform.

Figure 6 is a detail cross sectional view taken on the line 6-6 of Figure 5.

Figure 7 is a detail sectional view showing the holder on one of the U-shaped frames for supporting the bottom of the respective jack.

-Referring now to the drawing in which like characters of reference designate similar parts in the various views, It designates a truck wheel, which may be of the single or dual type weighing from two hundred and fifty to one thousand pounds more or less. For supporting-such a wheel during removal and application to the axle spindle, aswell as while repairs are being made to the wheel or to the truck, the vehicle cave intermediate portion i3 ofthe platform.

and has its transversely disposed bar it extending underneath the flat portion ii of the platform for supporting a respective jack through the medium of which the platform is raised and lowered.

There are two jacks is connected to respective fiat portions l2 of the platform and supported in respective jack pockets 29, see Figure 4, secured to the transversely disposed bars it of the frame members. The jacks are each of the conventional double screw type, the barrel 2! thereof being loosely supported in the respective pocket 20, see Figure 7. The upper end of the jack is loosely connected to the platform through the medium of a stud 22 of substantially square cross section, see Figure 6, loosely received in a similarly shaped opening 23 formed in the flat portion i2 of the platform. A head 24 is formed integrally with the top of the stud, see Figure 5. The frame members it are provided at their outer ends with brace bars 25, see Figure 4, which extend obliquely across the angles formed in the meeting ends of the side bars i5 and transversely disposed bar IQ of the frame member. A conventional swivel caster 26 is secured to each bar 25 to support the truck to be manipulated into a position underneathfthe lacked up I wheel iii.

For manipulating the truck, a handle 21 formed of a metalrod bent to substantially V-shape,'is provided at the ends with hooks 28, see Figure 3, which are engaged through openings formed in the'front edge portion of the fiat portions I2 of the platform.

Each jack is provided with a crank handle 29 which is rotatably mounted in an opening 38 formed in a respective upright supporting bar 8| which is secured to the outer end of one of the side bars it of the respective frame member, see Figure 4, by rivets 32 or other connectors.

' to an eye 35 on the respective jack pocket and is connected at the upper end'to an eye 36 formed on the superposed flat portion I! of the platform. The spring tends constantly to hold the jack retracted.

The frame members I extend normally in substantially horizontal position and just clear the floor, in which position of theparts the jacks II are retracted and the platform is disposed at its lowest limit of movement for manipulation to a position underneath the jacked up' wheel II by use of the handle 21. When the wheel truck is-in position underneath the jacked up wheel, the crank handles 29 of the jacks are rotated to extend the jacks, with the result that the platform II is lifted vertically and the frame members ll assume an angular position with respect to the horizontal, see Figure 2, and rein force the platform against collapse when the weight of the wheel i is supported by the platform. When the jacks have been extended sufficiently to cause-the weight of the wheel to be supported on the central concave portion I! of the platform, the handle 21 may be grasped to pull the truck away from the vehicle, thereby removing the wheel from the axle spindle. When the wheel is to be replaced, the above described movements are reversed.

From the above description, it is thought that the construction and operation of the invention will be fully understood without further explanation.

What is claimed is: 1

l; A vehicle wheel truck comprising a platform having flat portions at either end thereof and having a concave central portion adapted to-receive a truck wheel, U-shaped supporting frame members having their legs pivotally' secured at the ends to the underside of portion of the platform adjacent opposite ends thereof, the transverse members of the frames extending to points adjacent the ends of and underneath the platform, jack pockets secured to the central portions of said tranverse members, double screw jacks having the lower ends loosely engaged in said pockets and having the upper ends loosely secured to the flat portions of the platform and casters provided at the ends of the transverse bars of the U-shaped frame members, the frame members lying normally in horizontal position to permit the truck to be rolled from place to place on the casters, the frame members assuming an upwardly inclined position when the Jacks are extended to' reinforce the platform against collapse when the weight 'of the truck wheel is supported thereupon.

2. A vehicle wheel truck comprising a platform having flat portions ateither end thereof and having a concave central portion adapted to receive a truck wheel, frame members pivotally connected to the underneath side of the concave portion at opposite sides of the transverse median line thereof and extending underneath said flat portions, Jacks loosely secured at the bottoms to the frame members and loosely secured at the tops to the flat portions of the platform, helical springs secured to the frame members and to the flat portions of the platform tending constantly to hold the Jacks collapsed,

means for extending the jacks, casters at the comers of the frame members, and a substantially V-shsped handle connected'at the ends to the front longitudinal edges of the flat portions of the platform for manipulating the platform underneath a Jacked up truck wheel, actuation of said means extending the jacks to elevate the platform to support the truck wheel during removal and replacement.

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